body,
ul{
    margin: 0;
    padding: 0;
}
ul{
    list-style: none;
}

.container{
    margin: 0 auto;
    margin-left: 25px;
    width: 892px;
}
.roll-wrap:hover .control{
    display: block;
}

.roll-wrap{
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
}
.roll-wrap .roll__list{

}
.roll_row .roll__list::before, .roll_row .roll__list::after {
    content: "";
    display: table;
    line-height: 0;
}
.roll_row .roll__list::after {
    clear: both;
}
.roll_row .roll__list{
    width: 9999px;
}
.roll_row .roll__list li{
    float: left;
    display: block;
    margin-right: 20px;
    width: 285px;
    height: 240px;
    /*line-height: 100px;*/
    /*font-weight: bold;*/
    /*font-size: 30px;*/
    /*text-align: center;*/
    /*color: #fff;*/
    /*background-color: #ff9900;*/
}
.control{
    position: absolute;
    top: 30px;
    display: none;
    padding: 10px 5px;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
    background-color: rgba(0, 0, 0, .3);
}
.control:hover{
    background-color: rgba(0, 0, 0, .5);
}
.control.pre{
    left: 5px;
}
.control.next{
    right: 5px;
}
.roll_col{
    width: 100%;
    height: 200px;
    overflow: hidden;
}
.roll_col .roll__list{
    width: 100%;
}
.h600{
    height: 600px;
}
.roll_col li{
    display: block;
    height: 25px;
    line-height: 25px;
    width: 270px;
    font-size: 14px;
    text-align: center;
    border-bottom: 1px solid #333333;
    border-top: 1px solid #333333;
    background:#2B2B2B;
}
.roll_col li a{
    color: #ffffff;
}
.roll_col li:hover{
    background: #A90000;
}
.roll_col .li-2{
    background-color: #0099ff;
}
.roll_col .li-3{
    background-color: #ff0099;
}
.roll_col .li-4{
    background-color: #00ff99;
}
.roll_col .control{
    top: 80px;
}